8 month old modular with flooring problems?? HELP!!

We moved into our home about 8 months ago. It is an off frame modualr. We purchased it from a realtor in the area, who bought a huge track of land, and put of three modualrs which are identical. I have noticed that our flooring is quite eneven the last few months. Which I am sure is due to settling. However, I am not sure what is considered "normal settling" and what is not. There are lots of noticable dips in the flooring all over. Not so much noticable by sight, but you can feel it when you walk on the floor. I noticed under our home ( we have a cement crawl space) that the only support system it has are cement and cynder block columns down the middle of the home. I know we have a one year manufacture warranty on the home, but would something like this be covered under the warranty? Does anyone have any advice as far as what steps me should take, if any? Thank you!!!